Astronomers speculate stars tend to come in pairs, though eclipsing binaries are less common. And finding identical twins eclipsing, to boot, is like spotting that needle in a haystack, Stassun said.

• 天文学家们推测，尽管食双星并不太常见，但是恒星往往是成对出现的。然而斯坦桑表示，除了这对之外，要想发现互食的全等双子星无异于大海捞针。